1. Use hot coffee to intensify chocolate flavor without making the cupcakes taste like coffee; Substitute buttermilk with 1 2 cup milk plus 1 1 2 tsp lemon juice rested 5 minutes; Do not overmix after adding flour to keep crumbs tender; For darker color use Dutch process cocoa and keep baking soda in the recipe; Store frosted cupcakes airtight up to 3 days at cool room temperature or refrigerate up to 5 days and bring to room temp before serving